Bears: QB Kyle Orton moves in with Rex Grossman injured and Brian Griese failing. He doesn't have a big arm, but he has some mobility and he won games for them two years ago. The run defense is coming back, but the pass defense is merely OK.

Vikings: They've outscored their last three opponents 110-34 and the running back combo of Adrian Peterson-Chester Taylor has dominated the offense.

Streak: Bears -2, Vikings +4

Sizing it up: No secret what the Bears will do on defense. They'll pack the line of scrimmage to stop Peterson, daring QB Tarvaris Jackson to beat them with the pass.